Finding the Third Proportional to 28,131 and 42,940.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,131 : 42,940.50 = 42,940.50 : x
2. Step 2: Convert to fraction form
   28,131/42,940.50 = 42,940.50/x
3. Step 3: Cross multiply
   28,131x = 42,940.50 × 42,940.50
4. Step 4: Simplify right side
   28,131x = 1,843,886,540.25
5. Step 5: Solve for x
   x = 1,843,886,540.25/28,131
6. Step 6: Final answer
   x = 65,546.43